Loom-shuttle.



A. LAVERDIEHE.

1.00M SHUTTLE.

APPLlC ATl0N FILED JAN. 3!, 1916.

1 ,"27 6 ,084. Patented Aug. 20, 191 8.

r prion,

ARISIIIDE LAVEBDIELRE, OF GILBERTVILLE, MASSACHUSETTS.

LOOlVI-SHUTTLE.

Application filed January 31, 1916.

1 '0 all whom it may concern:

Be it known that I, Anisrinn Lnvnunrnnn, a citizen of the United Statesof America, residing at Gilbertville, in the county of lVoreester andState of Massachusetts, have invented certain new and useful improvements in Loom-Shuttles, of which the following is a specification.

This invention relates to improvements in loom shuttles, and provides aneye and tension for the weft or filling, the construe.- tion of theparts being such that the invention may be readily applied to loomshuttles and to shuttles of like character by merely enlarging theaperture for the usual eye of the shuttle.

The object of my improvement is to provide a. shuttle tension in whichthe weft engaging member or presser and its spring will be housed withina cylindrical body portion that is located in a bore formed in theshuttle, the presser and its spring being associated so that the springwill bear against one of the walls of a recess in the body portion tomove the presser against an opposite wall of the recess, as .will behereinafter set forth.

in the accompanying drawings which illustrate a preferred form of myinvention, Figure 1, is a plan view of a portion of a loom shuttleshowing the tension device applied thereto. Fig. 2, is a side elevation.3, is a section on the line 3-3 of Fig. 1. Fig. -l, is a longitudinalsection of the tension device detached. Fig. 5, is a side elevation,partly in section, and in this view a portion of the casing for the bodyportion of the tension device is broken away. Fig. 6, is a sectionalview on the line 6-6 of Fig. at. Fig. 7, is an inverted plan view of thepresser block or member. Fig. 8, is an end view. Fig. 9, is an end viewof the presser block, and Fig. 10, is an end view partly in section of amodification of the presser block.

Referring to the drawings, the shuttle 11 is provided through one sidewith. an aperture or bore 12 which extends from the outer side of theshuttle into a cavity formed in the shuttle, such bore being cylindricaland of a size to receive the tension device, the shuttle is alsoprovided with a smaller bore or opening 13 that is located opposite thecenter of the bore 12, the purpose of the opening being to admit of theSpecification of Letters Patent.

Patented A11 2t 1918.

Serial No. 75,324.

insertion of a punch or like implement used to force the tension deviceout of the bore 12, when it may be desired to remove the tension devicefrom the shuttle, either for the purpose of expanding the spring or forsmoothing the weft or thread engaging surface of the presser block.

The body portion of the tension device comprises a cylindrical member14, which between its ends is provided with a recess or opening thatprovidesa chamber 15, for the presser block and its spring, the member14 is bored longitudinally to provide thread or weft eyes, the ends ofthe way for the thread 16 being rounded or countersunk to avoid sharpedges, and it will be noted that the thread passage 16 is out of line oreccentric with the longitudinal axis of the cylindrical member 14, andby so positioning the thread passage 1 provide a range of adjustmentthat is sufficient to locate the eye in alinement with the side recess17 of the shut tle. The locating of the opening or thread passageeccentric to the longitudinal axis of the cylindrical member 14 isdesirable as in practice the bore 12, in fitting my tension device toold shuttles may be slightly out of line with the side recess; Thelength of the body portion or member 1a is such that one end will extendthrough the wall of the shuttle, as shown by Fig. 1, to position theinner end of the tension device in line with the center of the bobbinand to admit of access to a screw that secures a casing to the member14, which screw also indicates the position of the presser.

The cylindrical member 14 is preferably made of hard metal, porcelain orother suitable material, and has an aperture for a screw 18 thatconnects a casing 19 to the member id. The casing or cover 19 is made ofcomparatively soft metal as brass or copper and not only insures a tightfit in the bore of the shuttle in which the tension device is placed butsuch cover also serves to close the chamber for the presser block andits spring to prevent displacement thereof, when the tension device ismarketed as an article of manufacture, separate from the shuttle.

I The presser block 20 may be provided on its upper side with acentrally located boss 21 the circumference of which has a recess toreceive the lower portion of a spring 22, and instead of having aprojecting boss a recess 21 may be formed in the presser block, eitherthe boss or the recess will main tain the spring in engagement with thecentral portion of the presser plate. The underside of the presser plate20 is shaped to provide concave portions 23, a centrally locatedtransverse portion 24 which is flat and shoulders 25 which are on thesame plane as the transverse portion 24, the shoulders 25 preventrocking of the presser plate upon the fiatsurface of the bottom wall ofthe chamber 15 against which the presser block is forced by the spring22. When the presser block and its spring are placed in the chamber thespring will be compressed and one end of the spring will engage theupper wall of the chamber.

In practice the diameter of the casing for the body port-ion will besubstantially the same as the exterior of the eye that is supplied forshuttles, that are usually pro vided in the way for the thread or yarnwith a filling brush and my improvement takes the place of the fillingbrush and the ordinary eye and my improvement may be used with a fillingbrush particularly when it is desired to either oil or moisten thefilling thread or yarn.

The shuttle tension hereinbefore described may be cheaply manufactured,the spring and the presser block may be removed from the body portion sothat the spring can be expanded to give the requisite pressure of thepresser block toward the flat surface of the chamber and upon thethread. lVhen the parts are separated the presser block and the flatwall of the chamber may be smoothed by filing or grinding to obliterateany groove or grooves that may be formed therein by the passage of thethread. The convex portions of the presser block assist in admitting thetool or hook that is usually used in threading the tension device, andin use the tension device will hold the weft or filling taut and preventkinking while weaving, and the fibers on the weft or filling will belaid as the same is drawn between the presser block and the wall of thebody portion.

The design of the presser block may be varied, particularly as to theconfiguration of its face which engages the filling, and I prefer tolocate the chamber in the body portion to one side of the center of thebody portion, the cover may have a rough exterior or it may be screwthreaded, in order to positively engage the bore in the shuttle.

I claim.

1. A tension device for loom shuttles, comprising a cylindrical bodymember having throughout its entire length a longitudinal bore which isinte sected by an open sided transverse chamber that has one of thewalls thereof on the same plane as the thread engaging portion of thelongitudinal bore, a presser-block maintained entirely within thechamber and having in line with the longitudinal bore a fiat centrallylocated thread engaging portion one end of which is curved, means on theopposite side of the presser block from its thread engaging face forattaching thereto one end of a coiled spring, a coiled spring attachedto the presser block and engaging with one of the walls of the chamber,and a casing which encompasses the body member.

2. A tension device for loom shuttles,

comprising a cylindrical body-member hav ing a longitudinal bore whichis intersected by a transverse open sided chamber one of the walls ofsaid chamber being in line with a portion of the longitudinal bore, apresserblock maintained within the chamber and having a flat centrallylocated thread engaging portion; curved ends and side shoulders, and acoiled spring attached to the presser-block said spring engaging one ofthe walls of the chamber.

3. A tension device for loom shuttles com prising a cylindricalbody-portion having a longitudinally and eccentrically positioned bore,and an intermediate transverse chamber one of the walls of which is on aline with the longitudinal bore, a presser-block having in line with thebore intermediate convex portions, a coiled spring attached to thepresser block and engaging with one of the walls of the chamber.

ARISTIDE LAVERDIERE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

